﻿{template 'header'}
<script type="text/javascript" src="{__JS__}/awardRotate.js"></script>
<link href="{__CSS__}/style.css" rel="stylesheet">
<div class="w" style="background-image:url({$bg});">
    <!-- 代码 开始 -->
    <div class="banner">
            <div class="turnplate" style="background-image:url({__IMG__}/q.png);background-size:100% 97%; background-repeat: no-repeat;">
                    <canvas class="item" id="wheelcanvas" width="422px" height="422px"></canvas>
                    <img class="pointer" src="{__IMG__}/turnplate-pointer.png"/>
            </div>
    </div>
    <!-- 代码 结束 -->
    <div style="position:absolute; font-size:35px; bottom:20px; width:250px; border-radius:5px; left:50%; margin-left:-125px; padding:5px 10px; text-align:center; background:#FF0;"><a href="javascript:;" style=" color:#e94b4e; text-decoration:none;" class="fr_share">分享惊喜</a></div>
</div>
<script type="text/javascript">
var turnplate={
		restaraunts:[],				//大转盘奖品名称
		colors:[],					//大转盘奖品区块对应背景颜色
		outsideRadius:145,			//大转盘外圆的半径
		textRadius:128,				//大转盘奖品位置距离圆心的距离
		insideRadius:45,			//大转盘内圆的半径
		startAngle:0,				//开始角度
		bRotate:false				//false:停止;ture:旋转
};

$(document).ready(function(){
	//动态添加大转盘的奖品与奖品区域背景颜色
	turnplate.restaraunts = [];
	turnplate.colors = [];
	turnplate.font_colors = [];
        {loop $draws $item}
	turnplate.restaraunts.push('{$item["name"]}');
	turnplate.colors.push('{$item["colors"]}');
	turnplate.font_colors.push('{$item["font_colors"]}');
        {/loop}
	
	var rotateTimeOut = function (){
		$('#wheelcanvas').rotate({
			angle:0,
			animateTo:2160,
			duration:8000,
			callback:function (){
				alert('网络超时，请检查您的网络设置！');
			}
		});
	};

	//旋转转盘 item:奖品位置; txt：提示语;
	var rotateFn = function (item, txt){
		var angles = item * (360 / turnplate.restaraunts.length) - (360 / (turnplate.restaraunts.length*2));
		if(angles<270){
			angles = 270 - angles; 
		}else{
			angles = 360 - angles + 270;
		}
		$('#wheelcanvas').stopRotate();
		$('#wheelcanvas').rotate({
			angle:0,
			animateTo:angles+1800,
			duration:8000,
			callback:function (){
				alert(txt);
				turnplate.bRotate = !turnplate.bRotate;
			}
		});
	};
        var isDraw = false;
	$('.pointer').click(function (){
            {if !$isDraw}
                alert('您已经抽过奖了，把机会分享给好友吧！');
                return false;
            {else}
                if(turnplate.bRotate){return;}
                if (isDraw) {
                    alert('您已经抽过奖了，把机会分享给好友吧！');
                    return false;
                }
                turnplate.bRotate = !turnplate.bRotate;
                var url = "{php echo __MURL('draw', array('token' => $token, 'share_openid' => $share_openid), false, TRUE);}";
                $.ajax({
                        url:url,
                        type:'POST',
                        dataType:"JSON",
                        data:{act : 'draw'},
                        success: function(res){
                            if (res.type == 1) {
                                var item = res.index;
                                rotateFn(item, res.info);
                                isDraw = true;
                                //rotateFn(item, turnplate.restaraunts[item-1]);
                            }else {
                                alert(res.msg);
                                turnplate.bRotate = !turnplate.bRotate;
                            }
                        },
                        error: function(XMLHttpRequest, textStatus, errorThrown){
                            alert(XMLHttpRequest);
                            alert(textStatus);
                            alert(errorThrown);
                        }
                });
//                $.post(url, {act : 'draw'}, function(res) {
//                    if (res.type == 1) {
//                        var item = res.index;
//                        rotateFn(item, res.info);
//                        isDraw = true;
//                        //rotateFn(item, turnplate.restaraunts[item-1]);
//                    }else {
//                        alert(res.msg);
//			turnplate.bRotate = !turnplate.bRotate;
//                    }
//                }, "JSON"); 
            {/if}
                
//		//获取随机数(奖品个数范围内)
//		var item = rnd(1,turnplate.restaraunts.length);
//		//奖品数量等于10,指针落在对应奖品区域的中心角度[252, 216, 180, 144, 108, 72, 36, 360, 324, 288]
//		rotateFn(item, turnplate.restaraunts[item-1]);
//		console.log(item);
	});
});

function rnd(n, m){
	var random = Math.floor(Math.random()*(m-n+1)+n);
        return random;
}


//页面所有元素加载完毕后执行drawRouletteWheel()方法对转盘进行渲染
window.onload=function(){
	drawRouletteWheel();
};

function drawRouletteWheel() {    
  var canvas = document.getElementById("wheelcanvas");    
  if (canvas.getContext) {
	  //根据奖品个数计算圆周角度
	  var arc = Math.PI / (turnplate.restaraunts.length/2);
	  var ctx = canvas.getContext("2d");
	  //在给定矩形内清空一个矩形
	  ctx.clearRect(0,0,422,422);
	  //strokeStyle 属性设置或返回用于笔触的颜色、渐变或模式  
	  ctx.strokeStyle = "#FFBE04";
	  //font 属性设置或返回画布上文本内容的当前字体属性
	  ctx.font = '25px Microsoft YaHei';      
	  for(var i = 0; i < turnplate.restaraunts.length; i++) {       
		  var angle = turnplate.startAngle + i * arc;
		  ctx.fillStyle = turnplate.colors[i];
		  ctx.beginPath();
		  //arc(x,y,r,起始角,结束角,绘制方向) 方法创建弧/曲线（用于创建圆或部分圆）    
		  ctx.arc(211, 211, turnplate.outsideRadius, angle, angle + arc, false);    
		  ctx.arc(211, 211, turnplate.insideRadius, angle + arc, angle, true);
		  ctx.stroke();  
		  ctx.fill();
		  //锁画布(为了保存之前的画布状态)
		  ctx.save();   
		  
		  //----绘制奖品开始----
		  ctx.fillStyle = turnplate.font_colors[i];//"#FFF";
		  var text = turnplate.restaraunts[i];
		  var line_height = 30;
		  //translate方法重新映射画布上的 (0,0) 位置
		  ctx.translate(211 + Math.cos(angle + arc / 2) * turnplate.textRadius, 211 + Math.sin(angle + arc / 2) * turnplate.textRadius);
		  
		  //rotate方法旋转当前的绘图
		  ctx.rotate(angle + arc / 2 + Math.PI / 2);
		  
		  /** 下面代码根据奖品类型、奖品名称长度渲染不同效果，如字体、颜色、图片效果。(具体根据实际情况改变) **/
		  if(text.length>1){//奖品名称长度超过一定范围 
		  		//console.log(text.split(''));
			  //text = text.substring(0,1)+"||"+text.substring(1);
			  var texts = text.split('');
			  for(var j = 0; j<texts.length; j++){
				  ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height + 10);
			  }
		  }else{
			  //在画布上绘制填色的文本。文本的默认颜色是黑色
			  //measureText()方法返回包含一个对象，该对象包含以像素计的指定字体宽度
			  ctx.fillText(text, -ctx.measureText(text).width / 2, 10);
		  }
		  
		  //把当前画布返回（调整）到上一个save()状态之前 
		  ctx.restore();
		  //----绘制奖品结束----
	  }     
  } 
}

</script>
<script type="text/javascript">
sharedata = {
    success : function(res) {
        var url = "{php echo __MURL('share', array('token' => $token), true);}";
	$.post(url, function(dat){
//            alert(dat);
        });
    }
}
</script>
{template 'footer'}